Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
IN FLIGHT IN THE GYROPLANE
Who as a child dreamed of becoming a pilot, the conqueror of the fifth — the ocean air! A romantic nature will not abandon his dreams and in adulthood. And they can implement it:...
FROM PLATES – SET
When construction troubles in the suburban area behind, and finally, there is not just a roof over my head, and housing, regardless of how large or small, there is another problem — the...
